Company lists · Data refreshed September 2026

Top 25 Outsourced administrative support companies based in Belgium

RevenueBase identified 266 company matches for outsourced administrative support companies associated with Belgium as of September 2026 and tracks 937 professional contacts across them, including 254 with verified work emails. Brussels is the largest hub.

This list covers company matches for outsourced administrative support companies associated with Belgium, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
266Companies
937Contacts tracked
254Verified emails
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The 25 largest outsourced administrative support companies based in Belgium

Ranked by team size
Top 25 of 266 company matches for outsourced administrative support companies based in Belgium, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWatermael-boitsfort, BelgiumHQ recorded Sep 20, 202651-200163 contacts →

Exact match

“smartelia is a company, offering trusted, experienced and qualified virtual assistants for Small and Medium Companies.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchSchoten, BelgiumHQ recorded Sep 20, 202651-20091 contacts →

Exact match

“Wij geloven dat kleine ondernemingen echt grootse dingen doen.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchLiège, BelgiumHQ recorded Sep 20, 202611-5044 contacts →

Exact match

“CAPTEL est le premier centre d'appels / call-center en Belgique et existe depuis 40 ans.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact match8800, BelgiumHQ recorded Sep 20, 202611-5029 contacts →

Exact match

“Auxilios is Portugees en betekent "bijstand".”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchHasselt, BelgiumHQ recorded Sep 20, 20261-1012 contacts →

Exact match

“Heeft u tijd en energie om uw bedrijf te doen groeien?”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchZemst, BelgiumHQ recorded Sep 20, 202651-20012 contacts →

Exact match

“The House of Support bundelt de krachten van 5 bedrijven: 1.De Supporters: administratieve duizendpoten die jou ontlasten van jouw administratie zodat je je kunt concentreren op…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchGhent, BelgiumHQ recorded Sep 20, 20261-1010 contacts →

Exact match

“Peppr Admin is jouw partner voor administratieve ondersteuning op maat.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchHasselt, BelgiumHQ recorded Sep 20, 20261-1010 contacts →

Exact match

“HR, Payroll and administrative consulting/outsourcing to simplify your business.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchBrussel, BelgiumHQ recorded Sep 20, 20261-1010 contacts →

Exact match

“NISABA offers tailor-made support solutions for notaries and their offices in case of work overload.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchSint-lambrechts-herk, BelgiumHQ recorded Sep 20, 20261-109 contacts →

Exact match

“Onder leiding van Sonja, Charlotte en Miet zorgt Eagle Wings voor de meest persoonlijke benadering van administratieve taken.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchPulle, BelgiumHQ recorded Sep 20, 20261-108 contacts →

Exact match

“Addmodum staat voor ten volle.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchIzegem, BelgiumHQ recorded Sep 20, 202611-507 contacts →

Exact match

“BUR.O biedt de ondersteuning die je nodig hebt.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchAartrijke, BelgiumHQ recorded Sep 20, 20261-107 contacts →

Exact match

“Als succesvol ondernemer excelleer je ongetwijfeld in jouw vakgebied.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchAarschot, BelgiumHQ recorded Sep 20, 20261-107 contacts →

Exact match

“Our goal: to allow temporary employment agencies to focus 100% on their core business: recruiting candidates, convincing clients and serving stakeholders!”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchRijkevorsel, BelgiumHQ recorded Sep 20, 20261-106 contacts →

Exact match

“Hoe je ‘t ook draait of keert… alles draait rond uren.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchMons, BelgiumHQ recorded Sep 20, 20261-106 contacts →

Exact match

“CBO-Services vous supporte dans la gestion administrative et informatique de votre entreprise.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchSint-gillis-waas, BelgiumHQ recorded Sep 20, 20261-106 contacts →

Exact match

“Admore creates more time and more peace of mind for you to do what you love most, your expertise!”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchMechelen, BelgiumHQ recorded Sep 20, 202611-505 contacts →

Exact match

“Je werkt graag en hard voor je bedrijf, maar administratieve taken blijven vaak links liggen of zijn er teveel aan.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchBrussels, BelgiumHQ recorded Sep 20, 202611-505 contacts →

Exact match

“Cura Services offers professional administrative and organisational support, both temporary and long-term.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchOud-turnhout, BelgiumHQ recorded Sep 20, 202611-505 contacts →

Exact match

“Outsourcing of back-office finance and accounting enables the client to focus on their core business which increases saved time and money.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchBrussels, BelgiumHQ recorded Sep 20, 20261-105 contacts →

Exact match

“Need HR Support?”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchLiège, BelgiumHQ recorded Sep 20, 20261-105 contacts →

Exact match

“Avec une expérience de plus de 26 ans dans le milieu du secrétariat externe, Télé Secrétariat a développé des services adaptés aux besoins du secteur médical, aux professions…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchTurnhout, BelgiumHQ recorded Sep 20, 20261-104 contacts →

Exact match

“Ken je het gevoel dat je noodgedwongen die papierwinkel wil weggewerkt hebben voor de nieuwe werkweek begint?”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchOudenaarde, BelgiumHQ recorded Sep 20, 20261-104 contacts →

Exact match

“Wij zijn een jong en dynamisch bedrijf dat ondernemers helpt bij hun groei.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchGeel, BelgiumHQ recorded Sep 20, 20261-104 contacts →

Exact match

“Wij de administratie, jij de werf!”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 266 outsourced administrative support companies based in Belgium

See the full list, filter by size, metro and specialty, and access 254 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Outsourced administrative support companies based in Belgium at a glance

As of Sep 20, 2026
27.1%Verified-email coverage
3.5Average contacts per company
1-10Median size (employees)
4.9%Largest-city concentration · Brussels
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
248
11-50
10
51-200
6

Email recency for this list is measured worldwide rather than for Belgium, so it is reported there. Company counts and contact totals on this page are exact for Belgium, over 266 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Belgium whose business descriptions match “outsourced administrative support companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 254 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “outsourced administrative support companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many outsourced administrative support companies are there based in Belgium?

RevenueBase identified 266 company matches for outsourced administrative support companies associated with Belgium as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Smartelia tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most outsourced administrative support companies?

Brussels leads with 13 company records, followed by Antwerp (8) and Hasselt (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 254 professional contacts with verified work emails tracked across these 266 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.